The Definition of Toxic Substance

Definition of Toxic Substance

Any chemical or material capable of causing injury, illness, or death when it enters the body through inhalation, ingestion, or skin contact, at a sufficient dose. Toxicity can range from mild irritation to severe systemic or long-term health effects.

Example of Toxic Substance

A laboratory technician handling a toxic solvent works under a fume hood and wears chemical-resistant gloves to prevent inhalation and skin contact during transfer procedures.

Frequently Asked Questions: Toxic Substance

How is toxicity determined for a workplace substance?

‍Toxicity is typically established through laboratory and epidemiological research, often summarized in a substance's SDS, which details the dose levels and exposure routes associated with health effects.

What's the difference between acute and chronic toxicity?

Acute toxicity refers to harmful effects from a single or short-term exposure, while chronic toxicity results from repeated or prolonged exposure over time, sometimes to effects that appear years later.

What controls reduce the risk of toxic substance exposure?

‍Common controls include substitution with less hazardous materials, engineering controls like ventilation, administrative controls such as limiting exposure time, and PPE as the last line of defense.